AOpen AX4BPRO User Manual

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AX4B / AX4B Pro

DOC. NO.: AX4BP-OL-E0201B

Overview

Installation

Hardware

Drivers &

Utilities

BIOS Setup

AWARD

Glossary

Troubleshooting &

Technical Support

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WWhhaatt’’ss iinn tthhiiss mmaannuuaall

AX4B / AX4B P ro ...............................................................................................................................1

What’s in this manual ......................................................................................................................................................2

You Must Notice ..............................................................................................................................................................9

Before You Start............................................................................................................................................................10

Overview .......................................................................................................................................................................11

Feature Highlight...........................................................................................................................................................12

Quick Installation Procedure..........................................................................................................................................16

Motherboard Map ..........................................................................................................................................................17

Block Diagram ...............................................................................................................................................................18

Hard war e Ins tal lat ion..................................................................................................................19

About “Optional” and “Upgrade Optional”…...................................................................................................................20

JP14 Clear CMOS Data .................................................................................................................................................2 1

CPU Installation ............................................................................................................................................................. 22

CPU Jumper-less Design............................................................................................................................................... 25

Full-range Adjustable CPU Core Voltage (AX4B Pro Only)............................................................................................27

CPU and System Fan Connector (with H/W Monit oring)................................................................................................ 2 9

JP28 Keyboard/Mouse Wake-up Enable/Disable Ju mper ..............................................................................................30

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DIMM Sockets ...............................................................................................................................................................31

Front Panel Connector ..................................................................................................................................................33

ATX Power Connector ...................................................................................................................................................34

AC Power Auto Recovery ..............................................................................................................................................35

IDE and Floppy Connector ............................................................................................................................................36

IrDA Connector ..............................................................................................................................................................38

AGP (Accelerated Graphic Port) Expansion Slot ........................................................................................................... 39

AGP Protection Technology...........................................................................................................................................40

WOM (Zero Voltage Wake on Modem) Connector.........................................................................................................41

WOM by External BOX Modem...................................................................................................................................... 42

WOM by Internal Modem Card ...................................................................................................................................... 43

WOL (Wake on LAN).....................................................................................................................................................44

CNR (Communication and Network Riser) Expansi on Slot ............................................................................................46

PC99 Color Coded Back Panel......................................................................................................................................47

Support 2

Chassis Intrusion Connector.......................................................................................................................................... 49

CD Audio Connector......................................................................................................................................................5 0

Modem Audio Connector ...............................................................................................................................................51

AUX-IN Connector.........................................................................................................................................................52

USB Port.....................................................................................................................................................48

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GPO (General Purpose Output) Connector ...................................................................................................................53

Front Audio Connector...................................................................................................................................................54

Die-Hard BIOS (AX4B Pro only, Upgrade optional)........................................................................................................55

Dr. LED Connector ........................................................................................................................................................57

Dr. Voice (AX4B Pro only) .............................................................................................................................................59

JP1 Buzzer and JP2 Speaker Enable/ Dis able J umper ...................................................................................................60

Battery-less and Long Life Design.................................................................................................................................61

Over-current Protection .................................................................................................................................................62

Hardware Monitoring .....................................................................................................................................................63

Resettable Fuse ............................................................................................................................................................64

2200µF Low ESR Capacitor...........................................................................................................................................65

Layout (Frequency Isolation Wall) .................................................................................................................................66

Enlarged Aluminum Heatsink.........................................................................................................................................67

Driver and Utility..........................................................................................................................68

Auto-run Menu from Bonus CD Disc.............................................................................................................................. 69

Installing Intel® Chipset Software Installat ion Utili ty......................................................................................................70

Installing Intel IAA Driver ...............................................................................................................................................7 1

Installing Onboard Sound Driver....................................................................................................................................72

ACPI Suspend to Hard Drive.........................................................................................................................................73

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ACPI Suspend to RAM (STR)........................................................................................................................................ 78

AWARD BIOS ................................................................................................................................80

About BIOS Function Description…...............................................................................................................................81

How To Use Award™ BIOS Setup Program...................................................................................................................82

How To Enter BIOS Setup .............................................................................................................................................84

BIOS Upgrade ............................................................................................................................................................... 85

Overclocking ................................................................................................................................87

VGA Card & Hard Disk ..................................................................................................................................................88

Glossary .......................................................................................................................................89

AC97 ............................................................................................................................................................................. 89

ACPI (Advanced Configuratio n & Power Interfac e) ........................................................................................................89

AGP (Accelerated Graphic Port).................................................................................................................................... 89

AMR (Audio/Modem Riser)............................................................................................................................................90

AOpen Bonus Pack CD ................................................................................................................................................. 90

APM (Advanced Power Management)...........................................................................................................................90

ATA (AT Attachment)......................................................................................................................................................90

ATA/66...........................................................................................................................................................................90

ATA/100......................................................................................................................................................................... 91

BIOS (Basic Input/Output Sys tem) ................................................................................................................................ 91

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Bus Master IDE (DMA mode).........................................................................................................................................91

CNR (Communication and Networki ng Riser)................................................................................................................92

CODEC (Coding and Decoding) ....................................................................................................................................92

DDR (Double Data Rated) SDRAM................................................................................................................................92

DIMM (Dual In Line Memory Module) ............................................................................................................................9 2

DMA (Direct Memory Access) ........................................................................................................................................ 93

ECC (Error Checking and Correction)............................................................................................................................93

EDO (Extended Data Output) Memory...........................................................................................................................93

EEPROM (Electronic Erasable Programmab le ROM)....................................................................................................93

EPROM (Erasable Programmabl e ROM)....................................................................................................................... 9 3

EV6 Bus ........................................................................................................................................................................94

FCC DoC (Declaration of Conformity)............................................................................................................................ 94

FC-PGA (Flip Chip-Pin Grid Array) ................................................................................................................................94

Flash ROM ....................................................................................................................................................................95

FSB (Front Side Bus) Clock ...........................................................................................................................................9 5

C Bus ..........................................................................................................................................................................95

IEEE 1394 .....................................................................................................................................................................9 6

Parity Bit........................................................................................................................................................................96

PBSRAM (Pipelined Burst S RAM) ................................................................................................................................. 96

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PC-100 DIMM ................................................................................................................................................................ 97

PC-133 DIMM ................................................................................................................................................................ 97

PC-1600 or PC-2100 DDR DRAM .................................................................................................................................97

PCI (Peripheral Component Interface) Bus....................................................................................................................9 7

PDF Format...................................................................................................................................................................97

PnP (Plug and Play) ......................................................................................................................................................98

POST (Power-On Self Test) ...........................................................................................................................................9 8

RDRAM (Rambus DRAM).............................................................................................................................................. 98

RIMM (Rambus Inline Memory Module)......................................................................................................................... 98

SDRAM (Synchronous DRAM) ......................................................................................................................................99

Shadow E

SIMM (Single In Li ne M emory Mod ule)..........................................................................................................................99

SMBus (System Management Bus) ............................................................................................................................... 99

SPD (Serial Presence Detect ) .....................................................................................................................................100

Ultra DMA .................................................................................................................................................................... 1 00

USB (Universal Serial B us) ..........................................................................................................................................100

VCM (Virtual Channel Memory)...................................................................................................................................101

ZIP file.........................................................................................................................................................................10 1

PROM ..........................................................................................................................................................99

Troubleshooting.........................................................................................................................102

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Technical Support ......................................................................................................................106

Product Registration..................................................................................................................10 9

How to Conta ct Us.....................................................................................................................11 0

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YYoouu MMuusstt NNoottiiccee

Adobe, the Adobe logo, Acrobat is trademarks of Adobe Systems Incorporated. AMD, the AMD logo, Athlon and Duron are trademarks of Advanced Micro Devices, Inc. Intel, the Intel logo, Intel Celeron, Pentium II, Pentium III are trademarks of Intel Corporation. Microsoft, Windows, and Windows logo are either registered trademarks or trademarks of Microsoft Corporation in the United

States and/or other countries. All product and brand names used on this manual are used for identification purposes only and may be the registered

trademarks of their respective owners.

All of the specifications and information contained in this manual are subject to change without notice. AOpen reserves the right to revise this publication and to make reasonable changes. AOpen assumes no responsibility for any errors or inaccuracies that may appear in this manual, including the products and software described in it.

This documentation is protected by copyright law. All rights are reserved. No part of this document may be used or reproduced in any form or by any means, or stored in a database or retrieval system without prior written permission from AOpen Corporation. Copyright

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BBeeffoorree YYoouu SSttaarrtt

This Online Manual will introduce to the user how this product is installed. All useful information will be described in later chapters. Please keep this manual carefully for future upgrades or system configuration changes. This Online Manual is saved in PDF format get free download from Adobe web site

Although this Online Manual is optimized for screen viewing, it is still capable for hardcopy printing, you can print it by A4 paper size and set 2 pages per A4 sheet on your printer. To do so, choose File > Page Setup and follow the instruction of your printer driver.

Thanks for the help of saving our earth.

, we recommend using Adobe Acrobat Reader 4.0 for online viewing, it is included in Bonus CD disc or you can

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OOvveerrvviieeww

Thank you for choosing AOpen AX4B / AX4B Pro motherboard. The A X4B / AX4B Pro is Intel® Socket 478 motherboard (M/B) based on the ATX form factor featuring the Intel AX4B / AX4B Pro motherboard can support Intel In the AGP performance, it has one AGP slot which supports 1.5V AGP interface with 4x SBA/Data Transfer and 2x/4x Fast Write capability and pipelined spilt-transaction long burst transfer up to 1056MB/sec. According to different customer’s requirements, the Intel 845 chipset memory interface supports DDR SDRAM devices with densities of 64, 128, 256, 512Mb DDR SDRAM DIMM modules and the maximum memory size can be up to 2 GB. The onboard IDE controller supports Ultr a DMA 33/66/100 mode and the transfer rate up to 100MB/s. Further flexibility can be achieved by taking advantage of the Communication and Network

Riser (CNR) card option that allows audio, modem, and/or LAN

configuration on a single baseboard design. Besides, the AX4B / AX4B Pro has an AD1885 AC97 providing high performance and magic surround stereo sound to let people enjoy working with it. Now, let’s enjoy all features from AOpen AX4B / AX4B Pro motherboard.

845 (Brookdale) chipset. As high performance chipset built in the M/B, the

Socket 478 Pentium® 4 (Brookdale) and 400 MHz Front Side Bus (FSB) clock.

CODEC chipset onboard,

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FFeeaattuurree HHiigghhlliigghhtt

CPU

Supports Intel® Socket 478 Pentium® 4 (Brookdale) 1.4GHz~2.4GHz+ with 400MHz Front Side Bus (FSB) designed for Socket 478 technology.

Chipset

With the Intel® 845 (Brookdale) chipset, Intel delivers a discrete graphics solution with all the performance, innovative features and proven reliability of the Intel AGP graphics solution for Intel Controller Hub (ICH2) features two USB controllers supporting four USB ports. With support for 5.1 channels of AC’97 audio and the ability to make the most of soft audio/modem technology, the 845 chipset delivers an ideal solution for innovative new form factors.

845 chipset. With its highly scalable design, the new 845 chipset offers an ideal, leading-edge

Pentium® 4 processor platforms. And the smart integration in the Intel 845 chipset's I/O

Expansion Slots

Including five 32-bit/33MHz PCI, one CNR and one AGP 1x2x4X slots. The PCI local bus throughput can be up to 132MB/s. The

Communication & Nectworking Riser (CNR)

card. The Accelerated Graphics Port (AGP) supports data transfer rate up to 1056MB/s. AX4B / AX4B Pro motherboard includes one 1.5V AGP expansion slot with 4x SBA/Data Transfer and 2x/4x Fast Write capability. For AD and SBA signaling, AX4B / AX4B Pro motherboard can support 4X mode. Of five PCI slots provided, all of them are master PCI slots with arbitration and decoding for all integrated functions and LPC bus.

slot provided from AX4B / AX4B Pro can support CNR interface for a Modem/Audio

specification provides a new level of video display sophistication and speed which

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Memory

Provides three 184-pin DDR SDRAM DIMM sockets that support up to 2GB of PC-200/266 compliant DDR SDRAM (Synchronous Dynamic Random Access Memory). You may install 64, 128, 256, 512Mb DDR SDRAM DIMM modules into each socket.

Ultra DMA 33/66/100 Bus Master IDE

Comes with an on-board PCI Bus Master IDE controller with two connectors that supports four IDE devices in two channels, supports Ultra DMA

33/66/100, PIO Modes 3 and 4 and Bus Master IDE DMA Mode 5, and supports Enhanced IDE devices.

On-board AC’97 Sound

AX4B / AX4B Pro uses the AD 1885 AC97 sound chip. This on-board audio includes a complete audio recording and playback system.

1MHz Stepping Frequency Adjustment

Provides “1MHz Stepping Frequency Adjustment” function in the BIOS. This magic function allows you adjust CPU FSB frequency from 100~248 by 1MHz stepping adjustment, and lets your system can get maximum performance.

Watch Dog Timer

Includes AOpen “Watch Dog Timer” function that can auto-reset system in 4.8 seconds when you fail to system overclocking.

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Die-Hard BIOS with external controller ( AX4B Pro only, Upgrade optional)

The Die-Hard BIOS technology is a very effective hardware protection method that doesn’t involve any software or BIOS coding. Hence, it is 100% virus free.

Four USB Connectors

Provides two ports, four USB connectors for USB interface devices, s uch as mouse, keyboard, m odem, scanner, etc.

Dr. LED (Upgrade Optional)

The Dr. LED has 8 LEDs on this AX4B / AX4B Pro M/B to easily show what kind of problems you may encounter.

AGP Protection Technology

With AGP Protection Technology implemented, this motherboard will automatically detect the voltage of AGP card and prevent your chipsets from being burnt out.

Dr. Voice (AXBP Pro only)

The Dr. Voice provides 4 kinds of language version (English, Chinese, Japanese and German) that can easily to tell what kind of problem you may encounter. Specially tailored made for users, we have defaulted the language versions of Japanese market to Japanese only to save users from the trouble of setting jumpers, and thus making motherboard a real j umper less design.

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Power Management/Plug and Play

Supports the power management function that confirms to the power-saving standards of the U.S. Environmental Protection Agency (EPA) Energy Star program. It also offers Plug-and-Play making the system much user-friendlier.

, which helps save users from configuration problems, thus

Hardware Monitoring Management

Supports CPU or system fans status, temperature and voltage monitoring and alert, through the on-board hardware monitor module.

Enhanced ACPI

Fully implement the ACPI standard for Windows® 98/ME/2000 series compatibility, and supports Soft-Off , S TR (Suspend t o RAM, S3), STD (Suspend to Disk, S4) features.

Super Multi-I/O

Provides two high-speed UART compatible serial ports and one parallel port with EPP and ECP capabilit ies. UART can also be directed from COM1 to the Infrared Module for the wireless connections.

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QQuuiicckk IInnssttaallllaattiioonn PPrroocceedduurree

This page gives you a quick procedure on how to install your system. Follow each step accordingly.

1. Installing CPU and Fan

2. Installing System Memory (DIMM)

3. Connecting Front Panel Cable

4. Connecting IDE and Floppy Cable

5. Connecting ATX Power Cable

6. Connecting Back Panel Cable

7. Power-on and Load BIOS Setup Default

8. Setting CPU Frequency

9. Reboot

10. Insta lli ng O pe rat in g Sys tem (s uch as W ind ows 98 )

11. Installing Driver and Utility

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BIOS

)

JP15 & 16 D

per

)

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Green: AUX-IN Connector

Red: MODEM-CN Connector

Black: CD-IN Connecto

Onboard AC’97 CODEC

Front Audio Connecto

JP14 CMOS Clear Jumper

Chassis Intrusion Connector

Die Hard

(AX4B Pro only,

upgrade optional)

JP30 Die Hard BIOS

Select jumpe

(AX4B Pro only,

Uprade optional

CNR Expansion Slot

IrDA Connector

Dr. LED Connecto

4Mbit Flash ROM

2nd USB Connecto

JP2 Jumper (Speaker)

Front Panel Connector

JP1 Jum

Select Jumper (AX4B Pro only)

er (Buzzer

ATA/33/66/100

IDE Connector x2

FAN3 Connecto

r. Voice Language

Motherboard Map

PC99 Colored Back Panel

GPO1 Connecto

FDD Connecto

Resettable Fuse

JP28 Keyboard/Mouse Wakeup Enable/Disable Jum

FAN2 Connector

32-bit PCI Expansion Slot x5

2200μF Low ESR Capacitors 4-pin 12V. ATX Power Connector

GP 4x Expansion Slot

(for 1.5V AGP card )

478-pin CPU socket with Voltage and Frequency Auto-detection that support Intel

1.4~2.4 GH z+ CP U Intel®845 chipset (Brookd ale

CPU Fan Connector with H/W Monitoring Function

184-pin DIMM Socket x3 supports PC-200/266 DDR SDRAM maximum up to 2 GB

WOM Connector WOL Connecto

TX Power Connector

Pentium® 4

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BBlloocckk DDiiaaggrraamm

Socket 478

Intel

Pentium 4

CPU

AGP 4X Slot

400MHz System

Bus

Floppy Disk Drive x2

PC-200/266 DDR

SDRAM Up to 2GB

DIMM Socket x3

Intel 845

RG82845

Connector x4

MCH

USB

PCI Bus

1stUSB Port

2ndUSB Port

32-bit PCI Slot x5

ATA

33/66100

Primary

Channel

Secondary

Channel

Intel

FW82801BA

ICH2

Low Pin

Count Super

I/O

AC97

CODEC

AC Link

Firmware Hub

4Mbit Flash EEPROM

Parallel Port

Serial Port x2

IDE Drive x4

CNR Slot

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HHaarrddwwaarree IInnssttaallllaattiioonn

This chapter describes jumpers, connectors and hardware devices of this motherboard.

Note: El ectrostatic discharge (ESD) can damage your processor, disk drives, expansion boards, and other components. Always observe the following precautions before you install a system component.

1. Do not remove a component from its prot ective packaging until you are ready to install it.

2. Wear a wrist ground strap and attach it to a metal part of the system unit before handling a component. If a wrist strap is not available, maintain contact with the system unit t hroughout any procedure requiring ESD protection.

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AAbboouutt ““OOppttiioonnaall”” aanndd ““UUppggrraaddee OOppttiioonnaall””……

When you read this online manual and start to assemble your computer system, you may find some of functions are call ed “Optional”, and some are called “Upgrade Optional”. Though all AOpen motherboards include many amazing and powerful features, in some situations, these powerful features are not used to every user. Hence, we changed some key features as “Optional” for you to choose. Some optional functions that can be upgraded by users, we call them “Upgrade Optional”. As for those optional functions that can’t be upgraded by ourselves, we call them “Optional”. If needed, you can contact our local distributors or resellers for purchasing “Upgrade Optional” components, and again you can visit AOpen official web site:

www.aopen.com

for more detail information.

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(

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JJPP1144 CClleeaarr CCMMOOSS DDaattaa

You c an clear CMOS to restore system default setting. To cl ear the CMOS, follow the procedure below.

1. Turn off the s ystem and unplug the AC power.

2. Remove ATX power cable from connector PW R2.

3. Locate JP14 and short pins 2-3 for a few seconds.

4. Return JP14 to its normal setting by shorting pins 1 & pin2.

5. Connect ATX power cable back to connector PWR2.

Pin 1

Normal

default)

Clear CMOS

Tip: W hen should I Clear CMOS?

1. Boot fa il bec aus e of ove rc lock i ng…

2. Forget password…

3. Troubleshooting…

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CCPPUU IInnssttaallllaattiioonn

This motherboard supports Intel® Pentium 4 Socket 478 series CPU (Brookdale). Be careful of CPU orientation when you plug it into CPU socket.

1. Pull up the CPU socket lever and up to 90-degree angle.

2. Locate Pin 1 in the socket and look for a cut edge on the CPU upper interface. Match Pin 1 and cut edge, then insert the CPU into the socket.

Note: These pictures are for example only, it may not exactly be the same motherboard.

CPU socket

Lever

CPU pin 1 and

cut edge

CPU cut edge

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3. Press down the CPU socket lever and finish CPU installation.

Note: This picture is for example only, it m ay not exactly be the same motherboard.

CPU cut edge

Note: If you do not match the CPU socket Pin 1 and CPU cut edge well, it ma

damage the CPU.

Note: This socket supports Micro-FC-PGA2 package CPU, which is the latest CPU package developed by Intel. Other forms of CPU package are impossible to be fitted in.

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CCPPUU FFaann IInnssttaallllaattiioonn

This motherboard comes with a retention module attached on the CPU socket when shipped, we strongly recommend you to install AOpen special designed CPU Fan as shown below on the retention module for better heat dissipation. Please install the CPU Fan correctly as the following pictures shown.

1. Gently put the CPU Fan down on the retention module with clips aligning correctly to the four corners.

2. Pressing down the four clips with force one by one on the retention module.

Clip

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CCPPUU JJuummppeerr--lleessss DDeessiiggnn

CPU VID signal and SMbus clock generator provide CPU voltage auto-detection and allows the user to set the CPU frequency through the BIOS setup designs are eliminated. There will be no worry of wrong CPU voltage detection.

, therefore no jumpers or switches are used. The disadvantages of the Pentium based jumper-less

Intel® Socket 478

Pentium 4 CPU

CPU VID signal

Power Regulator

(Automatically generates CPU voltage)

CPU Freq. Ratio

CPU voltage

Clock

Generator

BIOS

Controlled

Circuit

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AAOOppeenn ““WWaattcchh DDoogg TTiimmeerr””

With this motherboard, AOpen provides a very special, useful feature for overclockers. When you power-on the system, the BIOS will check last system POST the CPU FSB reset the system to reboot in five seconds. Then, BIOS will detect the CPU’s default frequency and POST again. With this special feature, you can easily overclock your system to get higher system performance, and without removing the cover of system housing to set the jumper to clear CMOS data when your s ystem hanged.

frequency by user’s setting that stored in the BIOS. If system failed in BIOS POST, the “Watch Dog Timer” will

AOpen

Watch Dog

Timer

status. If it succeeded, the BIOS will enable “Watch Dog Timer” function immediately, and set

Enable/Disable Signal

from BIOS

Countdown about 5 seconds if fails in POST

Reset Signal

Clock Generator

BIOS

CPU ID Signal

CPU

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FFuullll--rraannggee AAddjjuussttaabbllee CCPPUU CCoorree VVoollttaaggee ((AAXX44BB PPrroo OOnnllyy))

This function is dedicated to overclockers and supports Adjustable CPU Core Voltage from 1.10V to 1.85V. But this motherboard can also automatically detects CPU VID signal and generates proper CPU core voltage.

SSeettttiinngg CCPPUU FFrreeqquueennccyy

BIOS Setup > Frequency/Voltage Control > CPU Clock Setting

This motherboard is CPU jumper-less design, you can set CPU frequency through the BIOS setup, and no j umpers or switches are needed.

CPU Ratio CPU FS B

Home

8x, 9x, 10x,…22x, 23x, 24x 100~248MHz

Tip: If your system hangs or fails to boot because of overclocking, simply use <Home> key to restore the default setting or you can wait the AOpen “Watch Dog Timer” reset the system after five seconds and system will auto-detect hardware again.

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Core Frequency = CPU FSB Clock * CPU Rati o PCI Clock = CPU FSB Clock / Clock Ratio

AGP Clock = PCI Clock x 2

CPU

Pentium 4

1.4G Pentium 4

1.5G Pentium 4

1.6G Pentium 4

1.7G Pentium 4

1.8G Pentium 4

1.9G Pentium 4

2.0G Pentium 4

2.2G Pentium 4

2.4G

CPU Core Frequenc

1400MHz 100MHz 400MHz 14x

1500MHz 100MHz 400MHz 15x

1600MHz 100MHz 400MHz 16x

1700MHz 100MHz 400MHz 17x

1800MHz 100MHz 400MHz 18x

1900MHz 100MHz 400MHz 19x

2000MHz 100MHz 400MHz 20x

2200MHz 100MHz 400MHz 22x

2400MHz 100MHz 400MHz 24x

FSB Clock

System Bus

Ratio

Warning: Intel® 845 chipset supports maximum 400MHz (100MHz*4) system bus and 66MHz AGP clock; higher clock setting may cause serious system damage.

Warning: To avoid possible CPU damage caused by overheating, an automatic shutdown of system had been especially designed on this motherboard. System would be automatically power off when this motherboard with implementation of THERMTRIP circuit detected a CPU tem

erature above 135 degree for 4 seconds.

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CCPPUU aanndd SSyysstteemm FFaann CCoonnnneeccttoorr ((wwiitthh HH//WW MMoonniittoorriinngg))

Plug in the CPU fan cable to the 3-pin CPU FAN connector. If you have chassis fan, you can also plug it on System Fan (FAN2) or FAN3 (AUX Fan) connector.

FAN3 Connector

GND +12V SENSOR

FAN2 Connector

CPU Fan Connector

Note: Some CPU fans do not have sensor pin, so that cannot support hardware monitoring function.

GND +12V SENSOR

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JJPP2288 KKeeyybbooaarrdd//MMoouussee WWaakkee--uupp EEnnaabbllee//DDiissaabbllee JJuummppeerr

This motherboard provides keyboard / mouse wake-up function. You can use JP28 to enable or disable this function, which could resume your system from suspend mode with keyboard or mouse installed. The factory default setting is set to “Disable”(1-2), and you may enable this function by setting the jumper t o 2-3.

KB/Mouse Wake-up

Disable

(Default)

JP28

Enable

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DDIIMMMM SSoocckkeettss

This motherboard has three 184-pin DDR DIMM sockets that allow you to install PC200 or PC266 memory up to 2 GB. Both ECC and Non-ECC DDR SDRAM are supported, but you can’t install them both on DIMM. Otherwise, it will cause serious damage on memory sockets or SDRAM m odule.

DIMM1 DIMM2 DIMM3

Warning: Please note that double-side DDR SDRAM is not allowed to be installed on both DIMM2 and DIMM3. But if you have had installed two double-side DDR SDRAM on them, the system can only read one side DDR SDRAM on each DIMM2 and DIMM3. However, you are not recommended to do so, otherwise, it will cause serious damage on memory sockets or SDRAM module.

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HHooww ttoo IInnssttaallll MMeemmoorryy MMoodduulleess

Please follow the procedure as shown below t o finish memory installation.

1. Make sure the DIMM module’s pin f ace down and match the socket’s size as depicted below.

2. Insert the module straight down to the DIMM s lot with both hands and press down firmly until the DIMM module is securely in place.

3. Repeat step 2 to finish additional DIMM modules installation.

Tab

40 pins 52 pins

Note: The ta bs of t he DIMM slot will close-up to hold the DIMM in place when the DIMM touches the slot’s bottom.

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FFrroonntt PPaanneell CCoonnnneeccttoorr

Attach the power LED, Keylock, speaker, power and reset switch connectors t the corresponding pins. If you enable “Suspend Mode” item in BIOS Setup, th ACPI & Power LED will keep flashing while the system is in suspend mode.

Locate the power switch cable from your ATX housing. It is 2-pin female connector from the housing front panel. Plug this connector to the soft-power switch connector marked SPWR.

Suspend Type ACPI L E D

Power on Suspend (S2) or Suspend to RA M (S3) Flashing for every second Suspend to Disk (S4) The LED will be turned off

IDE LED

Speaker

SPWR

CPI & PWR

LED

Reset

KEYLOC

SPEAKER

GND

+5 IDE LED IDE LED

GND

5VSB SPWR ACPILED GND ACPIL E D + NC NC GND RESET GND

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AATTXX PPoowweerr CCoonnnneeccttoorr

This motherboard comes with a 20-pin and 4-pin ATX power connector. Make sure you plug in the right direction. We strongly recommend you to connect the 4-pin 12V ATX connector before connecting the 20-pin ATX power connector and use standard power supply specially designed for Pentium 4 system.

Pin1

Ground 12V 12V

4-Pin 12V ATX Power Connector

COM COM

-5V +5V +5V

+12V

5VSB

PO-O

COM

+5V

20-Pin Power Connector

COM PS-ON COM

-12V +3.3V

+3.3V +3.3V COM +5V

COM

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AACC PPoowweerr AAuuttoo RReeccoovveerryy

A traditional ATX system should remain at power off stage when AC power resumes from power failure. This design is inconvenient for a network server or works tation, without an UPS, that needs to keep power-on. This motherboard implements an AC Power Auto Recovery f unction to sol ve this problem.

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IIDDEE aanndd FFllooppppyy CCoonnnneeccttoorr

Connect 34-pin floppy cable and 40-pin IDE cable to floppy connector FDC and IDE connector. The blue connector is IDE1 for clear identification. Be careful of the pin1 orientation. Wrong orientation may cause system damage.

Secondary Slave (4th)

Pin 1

Primary

Slave (2nd)

ATA 33/66/100 IDE Connector

Pin 1

FDD Connector

Secondary

Master (3rd)

IDE 2 (Secondary) IDE 1 (Primary)

Primary Master

(1st)

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IDE1 is also known as the primary channel and IDE2 as the secondary channel. Each channel supports two IDE devices that make a total of four devices. In order to work together, the two devices on each channel must be set differently to M aster and Slave mode. Either one can be the hard disk or the CDROM. The setting as master or slave mode depends on the jumper on your IDE device, so please refer to your hard disk and CDROM manual accordingly.

This motherboard supports ATA33 modes. The IDE bus is 16-bit, which m eans every transfer is two bytes.

Mode Clock Period Clock

PIO mode 0 30ns 20 600ns (1/600ns) x 2byte = 3.3MB/s PIO mode 1 30ns 13 383ns (1/383ns) x 2byte = 5.2MB/s PIO mode 2 30ns 8 240ns (1/240ns) x 2byte = 8.3MB/s PIO mode 3 30ns 6 180ns (1/180ns) x 2byte = 11.1MB/s PIO mode 4 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s DMA mode 0 30ns 16 480ns (1/480ns) x 2byte = 4.16MB/s DMA mode 1 30ns 5 150ns (1/150ns) x 2byte = 13.3MB/s DMA mode 2 30ns 4 120ns (1/120ns) x 2byte = 16.6MB/s ATA 33 30ns 4 120ns (1/120ns) x 2byte x2 = 33MB/s ATA 66 30ns 2 60ns (1/60ns) x 2byte x2 = 66MB/s ATA100 20ns 2 40ns (1/40ns) x 2byte x2 = 100MB/s

Warning: Th e sp ec ific at io n of the I DE c abl e is a max imu m of 46c m (1 8 inc hes ) ; make sure your cable does not exceed this length.

, ATA66 or ATA100 IDE devices. Following table lists the transfer rate of IDE PIO and DMA

Count

Cycle Time Data Transfer Rate

Tip:

1. For better signal quality, it is recommended to set the far end side device to master mode and follow the suggested sequence to install your new device. Please refer to above diagram

2. To achieve the best performance of Ultra DMA 66/100 hard disks, a special 80-wires IDE cable for Ultra DMA

1i r

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IIrrDDAA CCoonnnneeccttoorr

The IrDA connector can be configured to support wireless infrared module, with this module and application software s uch as Laplink or Windows 95 Direct Cable Connection, the us er can transfer files to or from laptops, notebooks, PDA devices and printers. This connector supports HPSIR (115.2Kbps, 2 meters) and ASK-IR (56Kbps).

Install the infrared module onto the IrDA connector and enable the infrared function from BIOS Setup, UART Mode, make sure to have the correct orientation when you plug in the IrDA connector.

GND

KEY

+5V

IIrrDDAA CCoonnnneeccttoorr

Pin 1

IR_RX IR_TX

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AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt)) EExxppaannssiioonn SSlloott

The AX4B / AX4B Pro provides an AGP 4x slot. The AGP 1x2x4x is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4byt es x 2 = 528MB/s. AGP is now moving to AGP 4x mode, 66MHz x 4bytes x 4 = 1056MB/s. Please note that this AGP expansi on slot support 1.5V AGP card only.

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AAGGPP PPrrootteeccttiioonn TTeecchhnnoollooggyy

With the outstanding R&D ability of AOpen and its specially developed circuit, AX4B / AX4B Pro implements an all new technology to protect your motherboard from being damaged by over-voltaging of AGP card. W ith AGP Protection Technology implemented, this motherboard will automatically detect the voltage of AGP card and prevent your chipsets from being burnt out. Please note that if you install a AGP card wi th 3.3V, which is not supported by intel i845, the LED3 will light up to warn you the possible damage with that exceeding voltage. You may contact the vendor of your AGP card for further support.

Warning: It is strongly recommended not to install a AGP card with 3.3V, which is not supported by intel i845, the LED3 will light up to warn you the possible damage.

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WWOOMM ((ZZeerroo VVoollttaaggee WWaakkee oonn MMooddeemm)) CCoonnnneeccttoorr

TThhiiss mmootthheerrbbooaarrdd iimmpplleemmeennttss ssppeecciiaall cciirrccuuiitt ttoo ssuuppppoorrtt WWaakkee OOnn MMooddeemm,, bbootthh IInntteerrnnaall mmooddeemm ccaarrdd aanndd eexxtteerrnnaall bbooxx mmooddeemm aarree ssuuppppoorrtteedd.. SSiinnccee IInntteerrnnaall mmooddeemm ccaarrdd ccoonnssuummeess nnoo ppoowweerr wwhheenn ssyysstteemm ppoowweerr iiss ooffff,, iitt iiss rreeccoommmmeennddeedd ttoo uussee aann iinntteerrnnaall mmooddeemm.. TToo uussee iinntteerrnnaall mmooddeemm,, ccoonnnneecctt 44--ppiinn ccaabbllee ffrroomm RRIINNGG ccoonnnneeccttoorr ooff mmooddeemm ccaarrdd ttoo tthhee WWOOMM ccoonnnneeccttoorr oonn tthhee

Pin 1

WOM Connector

+5VSB

RI-

GND

mmootthheerrbbooaarrdd..

Page 42

AAXX44BB // AAXX44BB PPrroo OOnnlliinnee MMaannuuaall

WWOOMM bbyy EExxtteerrnnaall BBOOXX MMooddeem

TTrraaddiittiioonnaall GGrreeeenn PPCC ssuussppeenndd mmooddee ddooeess nnoott rreeaallllyy ttuurrnn ooffff tthhee ssyysstteemm ppoowweerr ssuuppppllyy,, iitt uusseess eexxtteerrnnaall bbooxx mmooddeemm ttoo ttrriiggggeerr MMBB CCOOMM ppoorrtt aanndd rreessuummee bbaacckk ttoo aaccttiivvee..

Note: This picture is for exam ple only, it may not be exac tly the same as this motherboard.

Serial Port

(Modem Side)

Pin 1

Serial Port

(Motherboard Side)

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WWOOMM bbyy IInntteerrnnaall MMooddeemm CCaarrd

WWiitthh tthhee hheellpp ooff tthhee AATTXX ssoofftt ppoowweerr OOnn//OOffff,, iitt iiss ppoossssiibbllee ttoo hhaavvee aa ssyysstteemm ttoottaallllyy ppoowweerr ooffff,, aanndd wwaakkeeuupp ttoo aauuttoommaattiiccaallllyy aannsswweerr aa pphhoonnee ccaallll aass aann aannsswweerriinngg mmaacchhiinnee oorr ttoo sseenndd//rreecceeiivvee aa ffaaxx.. YYoouu mmaayy iiddeennttiiffyy wwhheetthheerr oorr nnoott yyoouurr ssyysstteemm iiss iinn ttrruuee ppoowweerr ooffff mmooddee bbyy cchheecckkiinngg ttoo sseeee iiff tthhee ffaann ooff yyoouurr ppoowweerr ssuuppppllyy iiss ooffff.. BBootthh aann eexxtteerrnnaall bbooxx mmooddeemm aanndd aann iinntteerrnnaall mmooddeemm ccaarrdd ccaann bbee uusseedd ttoo ssuuppppoorrtt MMooddeemm WWaakkee UUpp,, bbuutt iiff yyoouu uussee aann eexxtteerrnnaall mmooddeemm,, yyoouu hhaavvee ttoo lleeaavvee yyoouurr bbooxx mmooddeemm oonn..

Note: This picture is for exam ple only, it may not be exac tly the same as this motherboard.

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WWOOLL ((WWaakkee oonn LLAANN))

This feature is very similar as Wake On Modem, but it goes through local area network. To use Wake On LAN function, you must have a network card with chipset that supports this feature, and connect a cable from LAN card to motherboard W OL connector. The system identification information (probably IP address) is stored on network card and because there is a lot of traffic on the Ethernet, you need to install network management software, such as ADM, for the checking of how to wake up the system. Note that, at least 600mA ATX standby current is required to support the LAN card for this function.

WOL Connector

+5VSB GND LID

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WOL Connector

(Motherboard Side)

Note: This picture is for example only, it may not exactly be the same motherboard.

WOL Connector

(Ethernet Card Side)

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CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkk RRiisseerr)) EExxppaannssiioonn SSlloott

CNR is a riser card specif ication to replace the AMR (Audio/Modem Riser) that supports V. 90 analog modem, multi-channel

audio, and phone-line based networking. Owing to CPU computing power getting stronger, the digital processing job can be implemented in main chipset and share CPU power. The analogy conversion (CODEC circuit design, which is put on CNR card. This motherboard implements sound CODEC on board, but reserve CNR slot for the option of modem function. Note that you can still use PCI modem card.

) circuit requires a different and separate

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PPCC9999 CCoolloorr CCooddeedd BBaacckk PPaanneell

The onboard I/O devices are PS/2 Keyboard, PS/2 Mouse, COM1 and COM2, Printer, four USB, AC97 sound and game ports. The view angle of drawing shown here is from the back panel of the housing.

PS/2 Mouse

Connector

SPP/EPP/ECP

Parallel Port

MIDI/Game Port

PS/2 Keyboard

PS/2 Keyboard: For standard keyboard, which is using a PS/2 plug. PS/2 Mous e: For PC-Mo us e, whic h is us in g a PS/ 2 pl ug. USB Port: Available for connecting USB devices. Parallel Port: To c onnect wit h SP P/E CP/ EPP pri nter. COM1/COM2 Port: To connect with pointing devices, modem or others s erial devic es. VGA Connector: To connect with PC m onitor. Speaker Out: To External Speaker, Earphone or Ampl ifier. Line-In: Comes from the signal sources, such as CD/Tape player. MIC-In: From Microphone. MIDI/Game Port: For 15-pin PC joystick, game pad or MIDI devices.

Connector

USB

Connectors

COM 1 Port

COM 2 Port

MIC-In Line-In Speaker Out

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nnd

SSuuppppoorrtt 2

This motherboard provides four USB c onnectors to connect USB devices, such as mouse, keyboard, modem, printer, etc. There are two connectors on the PC99 back panel. You c an use proper cable to connect the other USB connector to the back panel or front panel of chassis.

UUSSBB PPoorrtt

Pin 1

USBPWR0

USB_FP_P0-

USB_FP_P0+

USB2 Connector

1 2

GND

KEY

USBPW R0 USB_FP_P1-

USB_FP_P1+ GND USB_FP_OC0

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CChhaassssiiss IInnttrruussiioonn CCoonnnneeccttoorr

The “CASE OPEN” header provides chassis intrusion-monitoring function. To make this function works, you have to enable it in the system BIOS, connect this header to a sensor somewhere on the chassi s. So, whenever the s ensor is triggered by lights or the opening of the chassis, the system will s end out beep sound to inform you. Please be informed that this useful function only applies to advanced chassis, you may purchase an extra sensor, attach it on your chassis, and make a good use of this function.

SENSOR GND

Chassis I nt rus i on

Connector

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CCDD AAuuddiioo CCoonnnneeccttoorr

This connector is used to connect CD Audio cable from CDROM or DVD drive to onboard sound.

CD-IN

R GND GND L

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MMooddeemm AAuuddiioo CCoonnnneeccttoorr

This connector is used to connect Mono In/MIC Out cable from internal modem card to onboard sound circuit. The pin 1-2 is Mono In, and the pin 3-4 is MIC Out. Please note that there is no standard for this kind of connector yet, only some internal modem cards implement this connector.

MODEM-CN

Mono In GND GND Mic Out

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AAUUXX--IINN CCoonnnneeccttoorr

This connector is used to connect MPEG Audio cable from MPEG card to onboard sound.

R GND GND L

AUX-IN

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GGPPOO ((GGeenneerraall PPuurrppoossee OOuuttppuutt)) CCoonnnneeccttoorr

GPO (General Purpose Output) is an advanced specification developed by AOpen for power users to define the further function by oneself. For example, you can design a daughter board to provide additional capabilities, such as an alarm, a buzzer, a timekeeper, etc.

GPO24

3.3V

2 6

GPO27

GPO28 GND

1 5

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FFrroonntt AAuuddiioo CCoonnnneeccttoorr

If the housing has been designed with an audio port on the front panel, you’ll be able to connect onboard audio to front panel through this connector. By the way, please remove the jumper cap from the Front Audio Connector before you connect t he cable. Do not remove this yellow jumper cap if housing without an audio port on the front panel.

Pin 1

1 2

AUD_MIC

AUD_FPOUT_R

AUD_FROUT_L

9 10

UD_GND UD_VCC

UD_RET_R KEY NC

Note: Pl ease remove the jumper cap from the Front Panel Audio Connector before you connect the cable. Do not remove this yellow jumper cap if housin

without an audio port on the front panel.

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DDiiee--HHaarrdd BBIIOOSS ((AAXX44BB PPrroo oonnllyy,, UUppggrraaddee ooppttiioonnaall))

Recently, many viruses have been found that they may destroy bios code and data area. Therefore, this motherboard implements a very effective hardware prot ection method that does not involve any software or BIOS coding, hence it is 100% virus free. You may restore the originally mounted BIOS with 2 This motherboard comes with one BIOS ROM, you may contact our local distributor or reseller for purchasing the extra BIOS ROM. Please visit our website: www.aopen.com

Rescue

ROM

1 1

normal

JP30 Pin 1

BIOS ROM

rescue

for details.

BIOS ROM by setting JP30 to pin 2-3 if it fails to act normally.

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EExxtteerrnnaall CCoonnttrroolllleerr ffoorr DDIIEE--HHAARRDD BBIIOOSS ((AAXX44BB PPrroo oonnllyy,, UUppggrraaddee ooppttiioonnaall))

External Controller provides you a better and convenience way to switch the BIOS status between “Rescue” and “Normal” without opening the case of your computer. You have to plug the jumper cable to the c onnector pin (JP 3 0 ) on the motherboard. Be careful of the orientation when you connect, the red wire should correspond to Pin1.

To / Form CPU

Read Only

Manual Switch

Read/Write

Normal

Flash ROM

Rescue ROM

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DDrr.. LLEEDD CCoonnnneeccttoorr

In conjunction with Dr. LED (Upgrade Optional), which can easily shows what kind of problems may occ ur on your system during assembly. It can clearly indicate whether there is a component issue or an installed issue by the 8 LEDs on the front panel of Dr. LED. This can helps you to have a self-diagnostic to your system status quickly.

Pin 1

3.3V

GND

1 2

GPO18 GPO19 GPO20

5 6

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Dr. LED is a CD disc st orage box with 8 LEDs on its front panel, the size of Dr. LED is exactly the same as 5.25 in floppy drive, so that it can be mount into normal 5.25 in drive bay of any housing.

The total 8 LEDs light up alternatively if the system fails in one of eight stages. Once the LED7 (latest LED) is lit, this indicates that the system has completed its boot-up procedure. The 8 LEDs indicate the following messages when lit:

LED 0 - Indicates that the CPU may have been installed incorrectly or is damaged. LED 1 - Indicates that the memory may have been installed incorrectly or is damaged. LED 2 - Indicates that the AGP may have been installed incorrectly or is damaged. LED 3 - Indicates that the PCI card may have been installed incorrectly or is damaged. LED 4 - Indicates that the floppy disk drive may have been installed incorrectly or is damaged. LED 5 - Indicates that the HDD may have been i nstalled incorrectly or is damaged. LED 6 - Indicates that the keyboard may have been installed incorrectly or is damaged. LED 7 - Indi ca tes th at t he sy st em is OK.

7 6 5 4 3 2 1 0

Boot O.K. KB HDD Floppy CPU Video MemoryPCI

Note: During POST (Power On Self Test) procedure, the Debug LED will light on sequentially from LED0 to LED7 until the system boot O.K

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DDrr.. VVooiiccee ((AAXX44BB PPrroo oonnllyy))

The Dr. Voice is a great feature of AX4B Pro motherboard, which can identifies what kind of problems had occurred in the operating system. It can even clearly “tell” whether there is a component issue or an installed issue, such as CPU, memory module, VGA, PCI add-on card, FDD, HDD or keyboard by voice. The Dr. Voice provides four kinds of language versions, English, German, Japanese and Chinese for your choosing. You can select preferred language version by JP15 & JP16 jumpers. However, if you want to disable this function, you may also set JP1 and JP2 to pin 2-3 to disable the buzzer and speaker from making out voices respectively.

JP16 Pin 1

JP15 Pin 1

JP16 Pin 1

Dr. Voice

Language

Select Jumper

English

(Default)

Chinese Japanese

JP15 Pin 1

German

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JJPP11 BBuuzzzzeerr aanndd JJPP22 SSppeeaakkeerr EEnnaabbllee//DDiissaabbllee JJuummppeerr

This motherboard comes with another considerate function, which allows you to turn off the voice coming out from buzzer and speaker, if Dr. Voice detects any errors that occurred in the operating system. If you want to disable this function, you may also set JP1 and JP2 to pin 2-3 to disable the buzzer and speaker from making out voices respect ively.

JP2 (Speaker)

Enable (Default)

Disable

JP1 (Buzzer)

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Auto Sw itc h

RTC

CMOS

Battery ATX Stand-by Power

uto switching to ATX standby power as long as AC power line is plugged. This smart design increases battery life if you still plug battery on motherboard.

Backup by EEPROM

BBaatttteerryy--lleessss aanndd LLoonngg LLiiffee DDeessiiggnn

This Motherboard implements Flash ROM and a special circuit that allows you to save your current CPU and CMOS Setup configurations without the need of a battery. The RTC (real time clock) can also keep running as long as the power cord is plugged. If you lose your CMOS data by accident, you c an just reload the CMOS configurations from Flash ROM and the system will recover as usual.

Flash

ROM

(Real Time Clock)

00:00:00

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OOvveerr--ccuurrrreenntt PPrrootteeccttiioonn

The Over Current Protection was very popular implemented on ATX 3.3V/5V/12V switching power supply. However, the new generation CPU uses different voltage that has regulator to transfer 5V to CPU voltage (for example, 2.0V), and makes 5V over current protection useless. This motherboard is with switching regulator onboard supports CPU over-current protection; in conjunction with 3.3V/5V/12V power supply provide the full line over-current protection.

Note: Although we have implemented protection circuit try to prevent any human operating mistake, there is still certain risk that CPU, memory, HDD, add-on cards installed on this motherboard may be damaged because of component failure, human operating error or unk nown nature reason. AOpen cannot guaranty the protection circuit will always work perfectly.

ATX

Switching

Power

Supply

12V (Protected by power supply)

3.3V (Protected by power supply)

5V (Protected by power supply)

Onboard

Power

Regulator

Over-Current

Protection

Circuit

CPU Core Voltage

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Fan

CPU

Fan Speed

AOpen H/W

Monitoring

Utility

CPU Temp erature

CPU Voltage

System Voltage

Detection

Circuit

HHaarrddwwaarree MMoonniittoorriinngg

This motherboard implements a hardware m onitoring system. As you turn on your system, this smart design will continue to monitor your system’s work ing voltage, fan status and CPU temperature. If any of these systems’ status goes wrong, there will be an alarm through the chassis external speaker or buzzer of motherboard (if existed) to warn the user.

Power

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RReesseettttaabbllee FFuussee

Traditional motherboard has fuse for Keyboard and USB port to prevent over-current or shortage. These fuses are soldered onboard that when it is broken (function as protecting the m otherboard), user still cannot replace it and the motherboard is still malfunctioning.

With expensive Resettable Fuse, the motherboard can be resumed back to normal function after the fuse had done its protection job.

Resettable

Fuse

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2222000

The quality of low ESR capacitor (Low Equivalent Series Resistance) during high frequency operation is very important for the stability of CPU power. The idea of where to put these capacitors is another know-how that requires experience and detail calculation.

Not only that, AX4B / AX4B Pro implements 2200μF capacitors, which is much larger than normal capacitor (1000 and 1500μf) and it provides better stability for CPU power.

μμμμ

FF LLooww EESSRR CCaappaacciittoorr

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AAXX44BB // AAXX44BB PPrroo OOnnlliinnee MMaannuuaall

LLaayyoouutt ((FFrreeqquueennccyy IIssoollaattiioonn WWaallll))

Note: This diagram for example only, it may not be exactly the same as this motherboard.

For high frequency operation, especially overclocking, layout is the most important factor to make sure chipset and CPU working in stable condition. The layout of this motherboard implements AOpen’s unique design called “ Frequency Isolation Wall”. Separating each critical portion of motherboard into regions where each region operates in a same or similar frequency range to avoid cross talk and frequency interference between each region’s operations and condition. The trace length and route must be calculated carefully. For example, the clock trace must be equal length (not necessarily as short as possible) so that clock skew will be controlled within few a pico second (1/10

Sec)

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EEnnllaarrggeedd AAlluummiinnuumm HHeeaattssiinnkk

Cool down CPU and Chipset is important for system reliability. Enlarged aluminum heat sink provides better heat consumption especially when you are trying to over clocking the CPU.

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DDrriivveerr aanndd UUttiilliittyy

There are motherboard drivers and utilities included in AOpen Bonus CD disc. You don’t need to install all of them in order to boot your system. But after you finish the hardware installation, you have to install your operation system first (such as Windows

98) before you can install any drivers or ut ilities. Please refer to your operation system’s installation guide.

Note: Please follow recommended procedure to install Windows 95

and Windows 98.

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AAuuttoo--rruunn MMeennuu ffrroomm BBoonnuuss CCDD DDiisscc

You can use the auto-run menu of Bonus CD disc. Choose the utility and driver and select model name.

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IInnssttaalllliinngg IInntteell®® CChhiippsseett SSooffttwwaarree IInnssttaallllaattiioonn UUttiilliittyy

Windows 95/98 cannot recognize this chipset, because it was released before the Intel 845 chipset. You can install the Intel INF Update Utility from the Bonus Pack CD disc auto-run menu to eliminate the “?” marks.

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IInnssttaalllliinngg IInntteell IIAAAA DDrriivveerr

You can install Intel IAA Driver to increase the performance of software applications and reduce PC boot times. You c an find it in the AOpen Bonus Pack

CD disc.

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IInnssttaalllliinngg OOnnbbooaarrdd SSoouunndd DDrriivveerr

This motherboard comes with AD1885 AC97 CODEC. You can find the audio driver from the Bonus Pack CD disc auto-run menu.

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AACCPPII SSuussppeenndd ttoo HHaarrdd DDrriivvee

ACPI Suspend to Hard Drive is basically controlled by Windows operation system. It sa ves your current work (system status,

memory and screen image) into hard disk, and then the system can be totally power off. Next time, when power is on, you can resume your original work directly from hard disk within few seconds without go through the Windows booting process and run your application again. If your memory is 64MB, normally, you need to reserve at least 64MB HDD space to save your memory image.

When go into Suspend:

When power-on next time:

System

Image &

Status

System

Image &

Status

Hard

Save into

Restore within seconds

Disk

Hard

Disk

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System Requirement

1. AOZVHDD.EXE 1.30b or later.

2. Delete config.sys and autoexec.bat.

Fresh installation of Windows 98 on a new system

1. Execute "Setup.exe /p j" to install Windows 98

2. After Windows 98's installation is complete, go to the Control Panel > Power Management. a. Set Power Schemes > System Standby to "Never". b. Click on "Hibernate" and select "Enable Hibernate Support" then "Apply". c. Click on the "Advanced" tab, you'll see "Hibernate" on "Power Buttons". Note that this option will only be s een after step

b mentioned above has been completed; otherwise only "Standby" and "Shutdown" will be shown. Select "Hibernate" and "Apply".

3. Clean boot into DOS and run AOZVHDD utility. a. If you ass ign the wh ole disk to your W in 98 system (FAT 1 6 or FAT 32 ), pleas e run "aozvhdd / c /file". Please remember

sufficient free space has to be reserved in the disk, e.g. if you have 64 MB DRAM and 16 MB VGA card installed, the system needs at least 80 MB free space. The utility will locate the space automatically.

b. If you assign an individual partition for Win 98, please run "aozvhdd /c /partition". Of course, the system needs to

provid e unf orm at te d an emp ty pa rt iti o n.

4. Reboot sys tem .

5. You've already implemented ACPI Suspend to-Hard Drive. Click "Start > Shut Down > Standby" then the screen will go off

immediately. A nd 1 minute or so will be taken for the system to save what's in the memory to the hard drive; the larger the

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memory size the longer this process will take.

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Changing from APM to ACPI ( Windows 98 only)

1. Run "Regedit.exe" a. Go through the following path

HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOW S

CURRENT VERSION

DETECT b. Select "ADD Binary" and name it as "ACPIOPTION". c. Right click and select Modify, add "01" after "0000" to make it "0000 01". d. Save changes.

2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardware. (It will find "ACPI BI O S " and remove "Plug and Pla y BIOS")

3. Reboot sys tem .

4. Clean boot into DOS and run "AOZVHDD.EXE /C /File"

Changing from ACPI to APM

1. Run "Regedit.exe" a. Go through the following path

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HKEY_LOCAL_MACHINE

SOFTWARE

MICROSOFT

WINDOW S

CURRENT VERSION

DETECT

ACPI OPTION

b. Right click and select "Modify, change "01" to "02" to make it "0000 02".

c. Save changes.

2. Select "Add New Hardware" under Control Panel. Allow Windows 98 to detect new hardwar e. (It will find "Plug and Play

BIOS" and remove "ACPI BIOS")

3. Reboot sys tem .

4. Run "Add New Hardware" again and it will find "Advanced Power Management Resource".

5. Click "OK ".

Tip: "02" means Windows 98 is ACPI acknowledged but the ACPI function is disabled.

Tip: Currently we found only ATI 3D Rage Pro AGP card would support

CPI suspend to disk. Please refer to AOpen web site for latest update

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AACCPPII SSuussppeenndd ttoo RRAAMM ((SSTTRR))

This motherboard supports ACPI Suspend to RAM function. With this function, you can resume your original work di rectly from DRAM without going through the Windows 98 boot ing process and run your application again. Suspend to DRAM saves your current work in the system memory, it is faster than Suspend to Hard Drive but requires power supplied to DRAM, while Suspend to Hard Drive requires no power.

When go into Suspend:

When power-on next time:

System Image & Status

in the DRAM

System Image & Status

in the DRAM

Backup by 3.3V Power

Power back to

Other System

Devices

Other System

Devices

Power loss

Power back to

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To implement ACPI Suspend to DRAM, please follow the procedures as below:

System Requirement

1. An ACPI OS is required. Currently, except Windows 95 and Windows NT, all other Windows Systems support ACPI.

2. The Intel

Chipset Software Installation Utility must have been installed properly.

Procedures

1. Changed the f ollowing BIOS settings.

BIOS Setup > Power Management Setup > A CPI Function: Enabled

BIOS Setup > Power Management Setup > A CPI Suspend Type: S3.

2. Go to Control Panel > Power Management. Set “Power Buttons” to “Standby”.

3. Press power button or standby button to wake up the system.

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AAWWAARRDD BBIIOOSS

System parameters can be modified by going into BIOS Setup m enu, this menu al lows yo u to conf igure t he syst em param eters and save the configuration into the 128 bytes CMOS area, (normally in the RTC chip or in the mai n chipset).

The AwardBIOS™ that installed in the Flash RO M BIOS provides critical low-level support for standard devices such as hard disk drives, serial and parallel ports.

Most BIOS setting of AX4B / AX4B Pro had been optimized by AOpen’s R&D engineering t eam. But, the default setting of BIOS still can’t fine-tune the chipset controlling entire system. Hence, the rest of this chapter is intended to guide you through the process of c onf ig uri ng y our sys t em us ing set up .

Currently there are two kinds of beep sound when system fails to boot at POST. The first type of beep sound consists of a single long beep and two short beeps, indicating a video error has failed BIOS from initializing video screen for displaying any additional information. The 2 occurred. You may look over the indicated error according to different beep significances.

To enter to BIOS setup menu

type of beep sound is a single long beep that beeping repeatedly, signaling a DRAM error has

, press <Del> when POST (Power-On Self Test) screen is shown on your monitor.

of the motherboard is a custom version of an industry standard BIOS. The

Note: Because the BIOS code is the most often changed part of the motherboard design, the BIOS information contained in this manual may be different with actual BIOS that come with your motherboard.

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AAbboouutt BBIIOOSS FFuunnccttiioonn DDeessccrriippttiioonn……

AOpen always dedicates to give users a more friendly computer system. Now, we include all function descriptions of BIOS setup program into the BIOS Flash ROM. When you select one function of BIOS setup program, the function description will appeared at right side of screen. Hence, you don’t need read this manual while you changing the BIOS setting.

Menu Items Select Window Item Function Description Window

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HHooww TToo UUssee AAwwaarrdd™™ BBIIOOSS SSeettuupp PPrrooggrraamm

Generally, you can use the arrow keys to highlight items that you want to choose, then press <Enter> key to select, and use the <Page Up> and <Page Down> key to change setting value. You also can press <F1> key for help and press <Esc> key to qui t Award™ BIOS setup program. The following table provides details about how to use keyboard in the Award™ BIOS setup program. By the way, all products of AOpen also provides a special function in the BIOS setup, you can press <F3> key selecting preferred menu language to display.

Key Description

Page Up or + Changing setting to next value or increase the value. Page Down or - Changing setting to previous value or decrease value. Enter Select the item. Esc 1. In main menu: Quit and don’t save any change.

2. In sub menu: Exit current menu to main menu. Up Arrow Highlight previous item. Down Arrow Highlight next item. Left Arrow Move the light bar to left side of menu. Right Arrow Move the light bar to right side of menu. F1 Get menu or item help description. F3 Changing menu language. F5 Load previous setting value from CMOS.

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Key Description

F6 Load fail-save setting value from CMOS. F7 Load turbo setting value from CMOS. F10 Save changed setting and exit setup program.

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HHooww TToo EEnntteerr BBIIOOSS SSeettuupp

After you finish the setting of jumpers and connect correct cables. Power on and enter the BIOS Setup, press <Del> during

POST (Power-On Self Test). Choose "Load Setup Defaults" for recommended optimal performance.

Del

Warning: Please avoid of using "Load Turbo Defaults", unless you are sure your system components (CPU, DRAM, HDD, etc.) are good enough for turbo setting.

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BBIIOOSS UUppggrraaddee

By flashing your motherboard, you agree to accept the possibility of BIOS f lash failure. If you motherboard is working and is stable, and there are no major bugs that were fixed by a latter BIOS revision, we recommend that you DO NOT try to upgrade your BIOS.

By doing so, you are taking a risk of BIOS flash failure. If you indeed intent on upgrading, PLEASE BE SURE to use the right BIOS revision for the right motherboard model.

AOpen Easy Flash is a little different than traditional flash method. The BIOS and you simply run a single commend to complete the flash process.

binary file and flash routine are linked together

Caution: AOpen Easy Flash BIOS programs are designed to be compatible with the Award BIOS. At the date of this note, AOpen Easy Flash BIOS programs are not available for AMI BIOS. AMI BIOS appears mostly only on old 486 boards and some early Pentium boards. Please be sure to view the README compressed inside the BIOS package before upgrading, and follow upgrade instructions carefully. This will minimize the chance of flash failures.

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Below are the steps for easy flashing procedures: (applies for Award BIOS ONLY)

1. Download new BIOS upgrade zip

2. Run shareware PKUNZIP (http://www.pkware.com/ binary BIOS file and the flash utility. Or Winzip (http://www.winzip.com/

3. Save the unzipped file into a bootable floppy disk. For example, AX4BP102.BIN & AX4BP102.EXE

4. Reboot the system to DOS mode without loading any memory handler (such as EMM386) or device driver. It needs around 520K free memory spaces.

5. Execute A:> AX4BP102 and the program will do the rest of it.

DO NOT turn off the power d uring FLASH PROCESS until you are asked to!!

6. Reboot system and press <Del> to enter BIOS setup

Warning: The new BIOS upgrade will permanently replace your original BIOS's settings and PnP information when flashing. You may need to reconfigure your BIOS setting and re-install Win95/Win98 as well as your add-on cards, so that your system can go back to work as normal.

file from AOpen's web site. For example, A X4BP102.ZIP.

) which supports miscellaneous operation systems to extract the

) in W ind o ws env i r onment.

, Choose "Load Setup Defaults", then “Save & Exit Setup”. Done!

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OOvveerrcclloocckkiinngg

As a leading manufacturer in motherboard industry, AOpen always listens to what customers want and develop products to fit different user's requirements. Reliability, compatibility, leading technology and friendly features are our basic goals when designing motherboards. Other than above mentioned design criteria, there are power users who are always seeking to push the limitation of the system performance by overclocking which we call them "Overclocker".

This section is dedicated to overclockers. This high performance motherboard is designed for maximum 400MHz CPU bus clock. But it comes with clock generator of

248MHz when we design it to accommodate with f uture CPU bus clock. Our lab test results showed that 120MHz is achievable when proper setting and qualified components were presented. Not only that, the CPU clock ratio can be up to 24x that supports almost all of Pentium feel appropriate for this motherboard is 120MHz bus clock.

But not guaranty. ☺

Tip: Note that overclocking may also cause thermal problem. Please make sure that the cooling fan and the heatsink were adequate to dissipate excessive heat that's generated by overclocking the CPU.

4 CPUs in the future and provides flexibility for overclockers. For your ref erence, the configuration we

☺

☺☺

Warning: The design of this product follows CPU and chipset vendor's design guideline. Any attempts to push beyond product specification are not recommended and you are taking your own risk to damage your system or important data. Before doing overclocking, you must make sure your components are able to tolerate such abnormal setting, especially CPU, DRAMs, hard disks, and AGP VGA cards.

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VVGGAA CCaarrdd && HHaarrdd DDiisskk

VGA and HDD is key components for overclocking, for your reference, the following list are what have been successful overclocked in our lab. Please note that AOpen can not guaranty they can be successful overclocked again. Please check the Available Vendor List ( AVL) by link to our official website.

VGA: http://www.aopen.com.tw/tech/report/overclk/mb/vga-oc.htm HDD: http://www.aopen.com.tw/tech/report/overclk/mb/hdd-oc.htm

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GGlloossssaarryy

AACC9977

Basically, AC97 specification separates sound/modem circuit to two parts, digital processor and a CODEC for analogy I/O they are linked by AC97 link bus. Since digital processor can be put into motherboard main chipset, the cost of sound/modem onboard solution can be reduced.

AACCPPII ((AAddvvaanncceedd CCoonnffiigguurraattiioonn && PPoowweerr IInntteerrffaaccee))

ACPI is the power management specification of PC97 (1997). It intends to save m ore power by taking full control of power management to operating system and bypass BIOS to operating system (such as Windows 98). This is a bit similar as the PnP power switch to control the power state transition.

AAGGPP ((AAcccceelleerraatteedd GGrraapphhiicc PPoorrtt))

AGP is a bus interface targeted for high-performance 3D graphic. AGP supports only memory read/write operation and single-master single-slave one-to-one only. AGP uses both rising and falling edge of the 66MHz clock, for 2X AGP, the data transfer rate is 66MHz x 4byte x 2 = 528MB/s. AGP is now moving to 4X mode, 66MHz x 4byt e x 4 = 1056MB/s. AOpen is the first company to support 4X AGP motherboards by both AX6C (Intel 820) and M X64/AX64 (VIA 694x), started from Oct 1999.

. The chipset or super I/O chip needs to provide standard register interface

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AAMMRR ((AAuuddiioo//MMooddeemm RRiisseerr))

The CODEC circuit of AC97 sound/modem solution can be put on motherboard or put on a riser card (AMR card) that connects to motherboard through AMR connector.

AAOOppeenn BBoonnuuss PPaacckk CCDD

A disc bundled with AOpen motherboard product; there are motherboard drivers, Acrobat Reader for PDF online manual and other us ef ul ut il iti es .

AAPPMM ((AAddvvaanncceedd PPoowweerr MMaannaaggeemmeenntt))

Unlike ACPI, BIOS controls most APM power management functions. AOpen Suspend to Hard Drive is a good example of APM power management.

AATTAA ((AATT AAttttaacchhmmeenntt))

ATA is the specification of diskette interface. In 80’s, many software and hardware manufacturers instituted the ATA specification together. The AT is meaning International Business Machines Corporation (IBM) personal computer/AT’s bus structure.

AATTAA//6666

ATA/66 uses both rising edge and falling edge but doubl es UDMA/33 transfer rate. The data transfer rate is 4 t imes of the PIO mode 4 or DMA mode 2, 16.6MB/s x4 = 66MB/s. To use ATA/66, you need special ATA/66 I DE cable.

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AATTAA//110000

ATA/100 is a new IDE specification under developing. ATA/100 uses both rising edge and falling edge as ATA/66 but clock cycle time is reduced to 40ns. The data transfer rate is (1/40ns) x 2 bytes x 2 = 100MB/s. To use ATA/100, you need special 80-wire IDE cab l e, t h e s ame as ATA / 6 6.

BBIIOOSS ((BBaassiicc IInnppuutt//OOuuttppuutt SSyysstteemm))

BIOS is a set of assembly routine/program that reside in EPROM or Flash ROM. BIOS controls Input/output devices and other hardware devices of motherboard. In general, to provide hardware independent portability, operation system and drivers is required to access BIOS without directly access hardware devices.

BBuuss MMaasstteerr IIDDEE ((DDMMAA mmooddee))

The traditional PIO (Programmable I/O) IDE requires the CPU to involve in all the activities of the IDE access including waiting for the mechanical events. To reduce the workload of the CPU, the bus master IDE device transfers data from/to memory without interrupting CPU, and releases CP U to operate concurrently while data is transferring between memory and IDE device. You need the bus master IDE driver and the bus master IDE HDD to support bus m aster IDE mode.

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CCNNRR ((CCoommmmuunniiccaattiioonn aanndd NNeettwwoorrkkiinngg RRiisseerr))

The CNR specification provides the PC industry the opportunity to deliver a flexible and cost reduced method of implementing LAN, home networking, DSL, USB, wireless, audio and modem subsystems widely used in today's "connected PCs". The CNR specification is an open industry specification and is supported by OEMs, IHV card manufacturers, silicon supplier and Microsoft.

CCOODDEECC ((CCooddiinngg aanndd DDeeccooddiinngg))

Normally, CODEC means a circuit that can do digital to analog conversion and also the analog to digital conversion. It is part of

AC97

sound/modem solution.

DDDDRR ((DDoouubbllee DDaattaa RRaatteedd)) SSDDRRAAMM

DDR SDRAM utilizes the existing DRAM infrastructure and technology while doubling the nominal bandwidth available to systems in an easy to design and simple to adopt way. Initially a perfect solution for memory intensive server and workstation applications, DDR low cost and low voltage will ultimately make it an ideal solution for all segments of the PC market, high performance desktop and mobile PCs, Value PCs and even Internet Appliances and mobile devices.

DDIIMMMM ((DDuuaall IInn LLiinnee MMeemmoorryy MMoodduullee))

DIMM socket has total 168-pin and supports 64-bit data. It can be single or double side, the golden finger signals on each s ide of PCB are different, and that is why it was called Dual I n Line. Almost all DIMMs are made by SDRAM Note that some old DIMMs are made by FPM/EDO

and only operate at 5V. Do not confuse them with SDRAM DIMM.

, which operate at 3.3V.

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DDMMAA ((DDiirreecctt MMeemmoorryy AAcccceessss))

Channel for communications between the memory and surrounding devices.

EECCCC ((EErrrroorr CChheecckkiinngg aanndd CCoorrrreeccttiioonn))

The ECC mode needs 8 ECC bits for 64-bit data. Each time memory is accessed; ECC bits are updated and checked by a special algorithm. The ECC algorithm has t he abi lity t o detect double-bit error and automatically correct single-bit error while parity mode can only detect single-bit error.

EEDDOO ((EExxtteennddeedd DDaattaa OOuuttppuutt)) MMeemmoorryy

The EDO DRAM technology is actually very similar to FPM (Fast Page Mode). Unlike traditional FPM that tri-states the memory output data to start the pre-charge activity, EDO DRAM holds the memory data valid until the next memory access cycle, that is similar to pipeline effect and reduces one clock state.

EEEEPPRROOMM ((EElleeccttrroonniicc EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Also known as E2PROM. Both EEPROM and Flash ROM can be re-programmed by electronic signals, but the interface technology is different. Size of EEPROM is much smaller than flash ROM.

EEPPRROOMM ((EErraassaabbllee PPrrooggrraammmmaabbllee RROOMM))

Traditional motherboard stores BIOS code in EPROM. EPROM can only be erased by ult ra-violet (UV) light. If BIOS has to be upgraded, you need to remove EPROM from motherboard, clear by UV light, re-program, and then insert back.

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EEVV66 BBuuss

EV6 Bus in the t echnology of Al pha processor from Digital Equipment Corporation. EV6 bus uses both rising and falling clock edge to transfer data, similar as DDR SDRAM or ATA/66 IDE bus. EV6 Bus Speed = CPU external bus clock x 2. For example, 200 MHz EV6 bus is actually using 100 MHz external bus clock, but the equivalent speed is 200 MHz.

FFCCCC DDooCC ((DDeeccllaarraattiioonn ooff CCoonnffoorrmmiittyy))

The DoC is component certification standard of FCC EMI regulations. This standard allows DIY component (such as motherboard) to apply DoC label separately without a shielding of housing.

FFCC--PPGGAA ((FFlliipp CChhiipp--PPiinn GGrriidd AArrrraayy))

FC means Flip Chip, FC-PGA is a new package of Intel for Pentium III CPU. It can plug into SKT370 socket, but require motherboard to add some signals on socket 370. That is, the motherboard needs to be redesigned. Intel is going to ship FC-PGA 370 CP U and phase out slot1 CPU.

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FFllaasshh RROOMM

Flash ROM can be re-programmed by electronic signals. It is easier for BIOS to upgrade by a flash utility, but it is also easier to be infected by virus. Because of increase of new functions, BIOS size is increased from 64KB to 256KB (2M bit). AOpen AX5T is the first board to implement 256KB (2Mbit) Flash ROM. Now flash ROM size is moving to 4M bit on AX6C (Intel 820) and MX3W (Intel 810) motherboard. , AOpen motherboard uses EEPROM for jumper-less and battery-less design.

FFSSBB ((FFrroonntt SSiiddee BBuuss)) CClloocckk

FSB Clock means CPU external bus clock. CPU internal clock = CPU FSB Clock x CPU Clock Ratio

CC BBuuss

See SMBus.

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IIEEEEEE 11339944

IEEE 1394 is a low-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE 1394 working group. The IEEE 1394 can transport data at 100, 200 or 400 Mbps. One of the solutions to connect digital television devices together at 200 Mbps . Serial Bus Management provides overall configuration control of the serial bus in the form of optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of isochronous channel ID, and notification of errors. There are two type of IEEE 1394 data transfer: asynchronous and isochronous. Asynchronous transport is the traditional computer memory-mapped, load and store interface. Data requests are sent to a specific address and an acknowledgment is returned. In addition to an architecture that scales with silicon technology, IEEE 1394 features a unique isochronous data channel interface. Isochronous data channels provide guaranteed data transport at a pre-determined rate. This is especially important for time-critical multimedia data where just-in-time delivery eliminates the need for costly buffering.

PPaarriittyy BBiitt

The parity mode uses 1 parity bit for each byte, normally it is even parity mode, that is, each time the memory data is updated, parity bi t will be adjusted to have ev en count " 1" for ea ch byte. W hen next t ime, if m emory is r ead with odd numbe r of "1", th e parity error is occurred and this is c alled single bit error detection.

PPBBSSRRAAMM ((PPiippeelliinneedd BBuurrsstt SSRRAAMM))

For Socket 7 CPU, one burst data read requires four QWord (Quad-word, 4x16 = 64 bits). PBSRAM only needs one address decoding time and automatically sends the remaining QWords to CPU according to a predefined sequence. Normally, it is 3-1-1-1, total 6 clocks, which is faster than asynchronous SRAM. PBSRAM is often used on L2 (level 2) cache of Socket 7 CPU. Slot 1 and Socket 370 CPU do not need PBSRAM.

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PPCC--110000 DDIIMMMM

SDRAM DIMM that supports 100MHz CPU FSB bus clock.

PPCC--113333 DDIIMMMM

SDRAM DIMM that supports 133MHz CPU FSB bus clock.

PPCC--11660000 oorr PPCC--22110000 DDDDRR DDRRAAMM

Based on FSB frequency, the DDR DRAM has 200MHz and 266MHz two type of working frequency. Because of DDR DRAM data bus is 64-bit, it provides data transfer bandwidth up to 200x64/8=1600MB/s, and 266x64/8=2100MB/s. Hence, the PC-1600 DDR DRAM is working with 100MHz and PC-2100 DDR DRAM is working with 133MHz FSB frequency.

PPCCII ((PPeerriipphheerraall CCoommppoonneenntt IInntteerrffaaccee)) BBuuss

Bus for the internal connection of peripheral devices, high-speed data channel between the computer and expansion card.

PPDDFF FFoorrmmaatt

A file format for electronic document, PDF format is independent from platform, you can read PDF file under Windows, Unix, Linux, Mac … with different PDF reader. You can also read PDF file by web browser such as IE and Netscape, note that you need to install PDF plug-in first (Included in Acrobat Reader).

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PPnnPP ((PPlluugg aanndd PPllaayy))

The PnP specification suggests a standard register interface for both BIOS and operating system (such as W indows 95). These registers are used by BIOS and operating system to configure system resource and prevent any conflicts. PnP BIOS or operating system will automatically allocate the IRQ/DMA/Memory. Currently, almost all the PCI cards and most ISA cards are already PnP compliant.

PPOOSSTT ((PPoowweerr--OOnn SSeellff TTeesstt))

The BIOS self-test procedure after power-on, sometimes, it is the first or the second screen shown on your monitor during system boot.

RRDDRRAAMM ((RRaammbbuuss DDRRAAMM))

Rambus is a memory technology that uses large burst mode data transfer. Theoretically, the data transfer should be hi gh than

SDRAM

channel, and this channel may have maximum 32 RDRA M devices, no matter how many RIMM

. RDRAM is cascaded in channel operation. For Intel 820, only one RDRAM channel is supported, 16-bit data per

RRIIMMMM ((RRaammbbuuss IInnlliinnee MMeemmoorryy MMoodduullee))

184-pin memory module that supports RDRAM memory technology. A RIMM memory module may contain up to maximum of 16 RDRAM devices.

sockets.

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SSDDRRAAMM ((SSyynncchhrroonnoouuss DDRRAAMM))

SDRAM is one of the DRAM technologies that allow DRAM to use the same clock as the CPU host bus (EDO and FPM are asynchronous and do not have clock signal). It is similar as PBSRAM 168-pin DIMM

SShhaaddooww E

A memory space in Flash-ROM to simulate E2PROM operation, AOpen motherboard uses Shadow E2PROM fo r jum per -less and battery-less design

and operates at 3.3V. AOpen is the first company to s upport dual-SDRAM DIMMs onboard (AP5V), from Q1 1996

PPRROOMM

SSIIMMMM ((SSiinnggllee IInn LLiinnee MMeemmoorryy MMoodduullee))

SIMM socket is only 72-pin, and is only single side. The golden finger signals on each side of PCB are identical. That is why it was called Single In Line. SIMM is made by FPM or EDO current motherboard design.

SSMMBBuuss ((SSyysstteemm MMaannaaggeemmeenntt BBuuss))

SMBus is also called I2C bus. It is a two-wire bus developed for component communication (especially for sem iconductor IC). For example, set clock of clock generator for jumper-less motherboard. The data transfer rate of SMBus is only 100Kbit/s, it allows one host to communicate with CPU and many masters and slaves to send/receive message.

to use burst mode transfer. SDRAM comes in 64-bit

DRAM and supports 32-bit data. SIMM had been phased out on

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SSPPDD ((SSeerriiaall PPrreesseennccee DDeetteecctt))

SPD is a small ROM or EEPROM device resided on the DIMM or RIMM. S PD st ores mem ory module i nformation such as DRAM timing and chip parameters. SPD can be used by BIOS

UUllttrraa DDMMAA

Ultra DMA (or, more accurately, Ultra DMA/33) is a protocol for transferring data between a hard disk drive through the computer’s data path (or bus) to the computer’s random access memory (RAM). The Ultra DMA/33 protocol transfers data in burst mode at a rate of 33.3MB/s, twice as fast as the previous Direct Access Memory (DMA) developed as a proposed industry standard by the Quantum corporation, makes of hard disk drives, and Intel, makes of chips et that support computer bus technology. Ultra DMA support in your computer means that it will boot (start) and open new applications more quickly. It will help users of graphic-intensive and applications t hat require large amounts of access to data on the hard disk drive. Ultra DMA uses Cyclical Redundancy Checking (CRC), offering a new level of data protection. Ultra DMA uses the s am e 40 -pi n ID E int e rfac e c abl e as P IO a nd D MA.

16.6MB/s x2 = 33MB/s

16.6MB/s x4 = 66MB/s

16.6MB/s x6 = 100MB/s

UUSSBB ((UUnniivveerrssaall SSeerriiaall BBuuss))

USB is a 4-pin serial peripheral bus that is capable of cascading low/medium speed peripherals (less than 10Mbit/s) such as keyboard, mouse, joystick, scanner, printer and modem. With USB, the traditional complex cables from back panel of your PC can be elim i nat ed .

to decide best timing for this DIMM or RIMM.

interface. Ultra DMA was

100

AOpen AX4BPRO User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

AX4B / AX4B Pro

Chipset

Expansion Slots

Memory

Ultra DMA 33/66/100 Bus Master IDE

1MHz Stepping Frequency Adjustment

Watch Dog Timer

Die-Hard BIOS with external controller ( AX4B Pro only, Upgrade optional)

Four USB Connectors

Dr. LED (Upgrade Optional)

AGP Protection Technology

Dr. Voice (AXBP Pro only)

Power Management/Plug and Play

Hardware Monitoring Management

Enhanced ACPI

Super Multi-I/O

Motherboard Map

System Requirement

Fresh installation of Windows 98 on a new system

Changing from APM to ACPI ( Windows 98 only)

Changing from ACPI to APM

System Requirement

Procedures